When the Heroes Away

Loki's supposed to help the team on missions, but when the team has smaller threats fights that they feel they can feel they can take care of without Loki's help they don't always bring him along. Leaving him powerless, weaponless and stuck inside the Hulk cell which is the room they saw fit to grant him when they were told he would be becoming a part of the team. What happens when unsavory individuals take advantage of this knowledge to stage a small incident to get at the God of Mischief to get at the knowledge he might have said Avengers? And will Loki take advantage of the situation to align himself with the enemy?